EP 2251460 B1 20170118 - SILICA CRUCIBLE FOR PULLING SILICON SINGLE CRYSTAL
Title (en)
SILICA CRUCIBLE FOR PULLING SILICON SINGLE CRYSTAL
Title (de)
QUARZGLASTIEGEL FÜR DIE ZÜCHTUNG VON SILIZIUMEINKRISTALLEN
Title (fr)
CREUSET EN VERRE DE SILICE POUR L'ÉTIRAGE D'UN MONOCRISTAL DE SILICIUM
Publication
Application
Priority
- JP 2009053886 W 20090302
- JP 2008049920 A 20080229
Abstract (en)
[origin: EP2251460A1] There is provided a silica crucible for pulling a silicon single crystal, comprising silica glass and having a two-layer structure of an outer layer and an inner layer, wherein the inner layer, in a sectional side view of the crucible, has a wavy inner surface shape having mountain parts and valley parts at least between a start position and an end position for the pulling of a silicon single crystal in a silicon melt surface, and when a distance from an upper opening end of the crucible to the start position for the pulling of the silicon single crystal is 100, only a crucible portion from the upper opening end to a position within a range of 40 to 100 is crystalline.
IPC 8 full level
C30B 15/10 (2006.01); C03B 20/00 (2006.01); C30B 29/06 (2006.01)
CPC (source: EP US)
C03B 19/095 (2013.01 - EP US); C30B 15/10 (2013.01 - EP US); C30B 35/002 (2013.01 - EP US); C03C 15/00 (2013.01 - US); Y02P 40/57 (2015.11 - EP US); Y10T 117/1032 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2251460 A1 20101117; EP 2251460 A4 20150401; EP 2251460 B1 20170118; CN 101965418 A 20110202; CN 101965418 B 20121205; JP 5234526 B2 20130710; JP WO2009107834 A1 20110707; KR 101176968 B1 20120830; KR 20100112173 A 20101018; TW 200944625 A 20091101; TW I378158 B 20121201; US 2011011334 A1 20110120; US 9150447 B2 20151006; WO 2009107834 A1 20090903
DOCDB simple family (application)
EP 09714081 A 20090302; CN 200980107029 A 20090302; JP 2009053886 W 20090302; JP 2010500796 A 20090302; KR 20107018275 A 20090302; TW 98106773 A 20090302; US 91973209 A 20090302